Popular searches
Go straight to your problem
Water-based polysiloxane sealer prepares walls with mould or very absorbent surfaces
Is it for you?
12,76 €/L
≈ 1,42 €/m² · covers about 7 m² one coat The kit seals about 7 m² and paints about 7 m²
−10 % Better as a kit: Sellador L44 + MATE500026,69 € · the discount is applied automatically in your cart See the kit →Free delivery from 59,90 € 24–72 h (working days) to mainland Spain 30-day returns on unopened tins
Water-based polysiloxane sealer prepares walls with mould or very absorbent surfaces
In what order?
A water-based polysiloxane sealer for new, absorbent or weak surfaces, and for walls that have had mould or water marks once they're clean. It regulates how much the surface absorbs, improves adhesion of the finish and helps you use less of it.
Where it goes
Not for: On new mineral surfaces, wait at least 14 days before applying it. It's a preparation: a finish goes on afterwards.
What's inside
In the box: the sealed tin in the size you choose (750 ml, 4 L or 15 L).
On new mineral surfaces, wait 14 days. Apply between +5 °C and +40 °C.
If the wall has had mould or water marks, clean it with a household fungicide or 10% bleach, leave it to act, rinse and let it dry for 24 h.
Time: Before · Tool: Cloth and gloves
New or very absorbent surface: mix it 1:1 with water as a primer. As a sealer: neat.
Time: 2 min · Tool: Bucket
With a spray, brush or roller, evenly. If needed, a second one after 24 h.
Time: Depends on the area · Tool: Brush and roller
The next day you can apply the finish.
Time: 24 h
For example, two coats of MATE5000 indoors.
Time: Next day · Tool: MATE5000
| Size | Covers | Price | Per m² |
|---|---|---|---|
| 750 ml | around 7 m² in one coat | 9,57 € | 1,42 € |
| 4 L | 36–40 m² in one coat | 46,17 € | 1,28 € |
| 15 L | 135–150 m² in one coat | 154,21 € | 1,14 € |
Manufacturer's coverage: 9–10 m²/L per coat.
What it does
What it does not
Designed for when you cannot fix the root cause right now: you rent, you have a tenant or it is not the time for building work. Touch up the area when it needs it.
Cause first. L44 prepares the surface, but it doesn't stop the source of the damp. If the mould comes back, look first at ventilation or where water is getting in.
And if it does not work?
It's recommended on walls with stains, mould that has already been treated, plaster, or porous or new surfaces. If your existing paint is sound and well bonded, you don't need it: the finish is enough. It isn't a finish: MATE5000 or Pared Seca goes on top.
9–10 m²/L per coat: the 750 ml tin seals about 7 m², the 4 L about 36–40 m² and the 15 L about 135–150 m². That's why the Condensation Kit (L44 750 ml + MATE5000 4 L) covers about 7 m²: for a larger area, choose a bigger size.
With a household fungicide or 10% bleach: leave it to act, rinse and let it dry for 24 h. Then the L44.
On new or very porous plaster, mixed 1:1 with water, as a primer. On a normal wall, neat, as a sealer. One coat with a brush or roller; on badly damaged areas, a second.
After 24 hours you can apply the finish. On new plaster, wait at least 14 days before applying the sealer.
No. It prepares the wall so the finish grips and lasts, but it doesn't stop the source of the damp. If the cause (condensation or water getting in) remains, the mould can come back: send us photos and we'll look into why, free of charge.
Yes: with MATE5000 it makes the Condensation Kit and the MATE5000 is 10% off, applied automatically in the cart. Free shipping from €59.90 and 30 days to return it for free if unopened.
Packs with the quantity already worked out. The discount is applied automatically in your cart.
Mould in the bedroom and the bathroom
1 × MATE5000 AntiHumedad 15 L65,79 €
1 × Sellador Total L44 750 ml9,57 €Walls with mould and skirting areas with salts. If damp is rising from the floor, ask us first.
1 × MATE5000 AntiHumedad 15 L65,79 €1 × MATE5000 AntiHumedad 4 L19,02 €1 × Sellador Total L44 4 L46,17 €
